Razor-sharpening device.



F. J. KALTEY'ER.

RAZOR SHARPENIN'G DEVICE. APPLICATION FILED MAR. I6. IsIs.

UNITED STATES FREDERICK J. KALTEYER, F PHILADELPHIA, PENNSYLVANIA.

RAZOR-SHARPENING DEVICE.

Specification of Letters Patent.

Patented June 19, 1917.

Application led March 16, 1916. Serial No. 84,569.

To all whom it 'may concern.'

Be it known that l, Frisur-mien J. KaL- Tarsu, a citizen of the UnitedStates, residing in the city and county of Philadelphia,

l adapted to be employed to sharpen the blades of the old fashionedrazors and also to sharpen the blades of safety razors or any type ofremovable razor blade.

It further consists of a novel construction of a razor sharpening devicein which a `blade holder is provided with a resilient shank vWhich ispivotally mounted to provide both a rocking adjustment and an adjustmentto and from the sharpening rolls in a longitudinal plane between therolls so that the position of the blade with reference to a roll may bevaried and also its resistance to fieXure.

Other novel features of construction and advantage will hereinafter moreclearly appear in the detailed description of my invention.

For the purpose of illustrating my invention, I have shown in theaccompanying a typical embodiment which will give satisfactory andreliable results in practice, but it is of course to be understood thatY such embodiment is typical only and' that the variousinstrumentalities of which my invention consists can be variouslyarranged and organized, and that my invention is not limited to the:precise arrangement and organization of these instrumentalities asherein shown and described. v

Figure 1 represents a perspective view of a razor sharpening deviceembodying my invention. Y Y e Fig. 2 represents an end elevation of Fig.certain partsnbeing shown in section. Fig. .3 represents a sideelevation, partly in ection, ofa portion of my device.

certain arts ofthe device, .showing them in a di erent relation withrespect to each other from that seen in1Fig. 2.

4 represents an end'` elevation ofv Fig. 5 represents a diagrammaticalview of the automatic stop, mechanism of the motor.

Similar numerals of reference indica-te corresponding 'parts in thefigures.

Referring to the drawings 1 designates a base or support, upon which ismounted, in any desired manner, a motor 2, which for purposes ofillustration. I have shown as consisting of an electric motor having theconductors 3 and 4:- connected With the battery 5 or other Source ofelectrical supply. 6 designates the motor shaft on which is mounted thepinion 7, which meshes with a gear S mounted on a'shaft 9, and said gear8 meshes with a gear 10 mounted on a shaft 11. The stationary shafts 9and 11 have their inner ends fixed in any desired manner on the casingof the motor 2, and arie arranged` parallel with respect to each ot er.

A The gear 8 is fixed to a roll 12 loosely I mounted on the shaft 9, andretained thereon by means of a set collar 13, which is secured to theshaft, in the present instance, by means of a pin 14 passing through thecollar 13 and the shaft 9. A portion of the periphery of the roll 12 iscut away, as indicated at 15, so as to form a shoulder 16. 17 deslgnatesa strip of leather or other suitable material which has been properlyAtreated to form a surface which will have a sharpening effect on theblade with which it comes in contact, and as will be apparent, either agrinding or a stropping surface may be provided.

The strip of material 17 extends from the shoulder 16 to the point 18.19 designates a roll to which the gearlO is fixed, and said rollconforms in construction and contour to the roll 12 and is mounted onthe shaft 11, a set collar 2O being employed to retain the roll 19 onthe shaft 11.. .A 21 designates a strip of leather or other. sui-tablematerial secured to the periphery ofthe Aroll 19 and conforming inconstruction and contour to the strip of material 17 on the roll 12.

22 designates a threaded rod fixed to the casing of the motor Y2 andextending through the slot 23 of the flange or anglearm 24 of a bracket25, and in order to maintain the gages thethreads of the rod 22. Thebracket 25V comprises an arm which extends for- ,bracket 25 in itsvertically adjusted position, a thumb nut 26 is provided which enwardlyand which is provided at its forward end with a threaded rod 27 havingthe thumb nut 28. The rod 27 passes through the slot 29 in a bladeholder or clamping device 30, which consists of a resilient arm 31 whichcarries at its lower end the clamping jaws 32 and 33. As illustrated,the jaws are formed by slotting the lower end of the blade holder inorder to provide two yielding clamping jaws.

A bolt 34 passes through the jaws and has a threaded end with which athumb nut 35 engages in order that the jaws may b'e opened or closed, asdesired. The inner face of the jaw 32 is lreversely inclined, or inother words, the lowerportion inclined upwardly and outwardly, as seenat 36, and then inclines upwardly and inwardly, as seen at 37, and thenextends vertically upwardly, as indicated at 38, (see Fig. 1). The innerface of the jaw 33 is constructed in a similar manner to the inner faceof the jaw 32, and a detailed description thereof is therefore thoughtto be unnecessary. One of the shafts 9 or 11, for example, the Shaft 9,has loosely mounted thereon a gear 39 i fixed to the gear 8 and having asingle tooth to engage the pins of a gear 40l suitably mounted andhaving a single tooth to engage the pins of a gear 41 suitably mounted.The

gear 41 has a tooth to engage the actuating lever 42 of a switch 43which automatically shuts oif the current from the source of electricsupply to the motor after a predetermined number of revolutions has beenmade by the motor. j

It will, of course, be understood thatthis automatic stop mechanism maybe dispensed with, if desired, and it is not necessary to employ it inall cases arising in practice. When the sharpening rolls are in theposition seen in Fig. 4, the razor to be sharpened is not in Contactwith either sharpening roll.

lIn the operation, the blade to be sharpened is clamped between the jaws32 and 33 b'y proper adjustment of the thumb nut 35. The switch 42 isnow actuated in the proper direction to close it, and the motor 2 causesthe rolls 12 and 19 to rotate in the direction of the arrows seen inFig. 2, so that the blade is alternately engaged on opposite sides bythe sharpening elements, it being seen that one has the lead on theother. The parts are constructed in such a manner that the blade will beyieldingly pressed against the sharpening surface, due to the resiliencyof the arm 31, as will be understood by reference to Fig. 2. l

The blade holder is rigidly supported, but owing tothe vprovision of thespring arm 31, it will be maintained against the sharpening elementsunder the proper tension. This tension can he adjusted, as is apparent,by pro er actuation of the thumb nut 28 and vertice adjustment of theblade holder 30,

and by the vertical adjustment of the bracket 25, the machine can beadjusted to receive razor blades of diii'erent widths. If it is desiredto use different types ofsharpening rolls, for example, to substitute `aroll having'a stropping surfae for one having an abrasive or honingsurface, it is simply necessary to remove the set collars and insert therolls to be substituted into position and secure them in position by theset collars.

It will be seen from the drawings that the blade holding device isnormally positioned in such a manner that the cutting edge of the bladeto be sharpened is substantially midway between the shafts 9 and 11. Thesharpening surface of the rolls is formed on a radius greater thanone-half the distance between the centers of the rolls, and thecurvature of the sharpening surface at its end is on a graduallydecreasing radius so that the blade returns to its normal neutralposition after leaving the sharpening surface without any materialvibration;

It will now be apparent that Ihave devised a novel and useful razorsharpening device which embodies the features of advantage enumerated asdesirable in the statement of the invention and the above description,and while I have, in the present instance, shown and described apreferred embodiment thereof which will give in practice -satisfactoryand reliable results, it is to be understood that the same issusceptible of modication in various particulars without departing fromthe spirit or scope of the invention or sacrificing any of itsadvantages.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a razor sharpening machine, the combination of parallel rotatablesharpening rolls, a bracket arm, and a blade holder having a resilientshank pivotally mounted on the arm to have both a rockin adjustment andan adjustment to and om the rolls in a longitudinal plane passingbetween the rolls, whereby both the position of the blade with referenceto a roll and its resistance to flexure may be varied.

2. In a razor sharpening machine, the combination of parallel rotatablesharpening rolls, a bracket arm adjustable to and from the rolls in aplane passing longitudi- Inally between them, and `a-blade holder havinga resilient shank pivotally mounted on the arm to have both a rockingadjustment and an ladjustment to and from the rolls in saidlongitudinal-plane,'whereby both the position of the blade withreference to a roll and its resistance to iieXure may be varied.

3. In a razor sharpening machine, the combination of parallel rotatablesharpening rolls, a pivoted bracket arm adjustable to and from the rollsin a plane passing longi- 13e on the al1-into have bot-h alockingvadjustment and an adjustment vto and from the rolls in saidlongitudinal plane, whereby both the position of the binde withreference to a roll und its resistance to flexure may be varied.

FREDERICK J. IQALTEYER.

' Witnesses:

H. S. FAIRBANKS, C.' D. MCVAY.

Copies f this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

